Karkand, if you don't recall, features four maps from Battlefield 2, remade in the Frostbite 2 engine that powers Battlefield 3. It will also include five new dogtags, five more achievements and trophies, three new vehicles (DPV, BTR-90, F-35B STOVL jet fighter), 10 "iconic Battlefield weapons", and a persistence system where "completing assignments" earns you rewards.

If you pre-ordered, it's free; if you didn't, it'll run you $15. New screenshots are below.